/Engine/Source/Runtime/Core/Public/Logging/MessageLog.h
Add a message to the log.
The message for chaining calls
const [TSharedRef](API\Runtime\Core\Templates\TSharedRef)< [FTokenizedMessage](API\Runtime\Core\Logging\FTokenizedMessage) > & AddMessage ( const [TSharedRef](API\Runtime\Core\Templates\TSharedRef)< [FTokenizedMessage](API\Runtime\Core\Logging\FTokenizedMessage) > & InMessage )